John Deere 9120
Power
280 hp
Production
2002-2007
Engine
6-cylinder
Transmission
John Deere PowerSync
Weight
35,375 lbs (620/70R46 duals) [16046 kg]
Drive
4WD
From the same series:
Introduction
John Deere 9120 Four-Wheel Drive Tractor
The John Deere 9120 is an articulated four-wheel drive tractor produced between 2002 and 2007 at the Waterloo, Iowa, manufacturing facility. Designed for large-scale agricultural operations, this model emphasizes high-horsepower traction and structural stability.
Engine and Performance
The tractor is powered by an 8.1-liter (496 ci) 6-cylinder liquid-cooled engine. It delivers 280 hp (208.8 kW) at a rated engine speed of 2100 RPM. The engine utilizes a 16.0:1 compression ratio and features a dry-type air cleaner. Cooling capacity is rated at 55 quarts (52.1 liters), with an oil capacity of 28 quarts (26.5 liters).
Transmission and Drivetrain
The 9120 offers two transmission options: the John Deere PowerSync partial power shift, providing 24 forward and 6 reverse gears, or a full power shift transmission with 18 forward and 6 reverse gears. The PowerSync system features four ranges and three gears with a high-low power shift, utilizing synchronized shifting for ranges and specific gear sets. Steering is accomplished via an articulated hydrostatic system, and stopping power is provided by hydraulic wet disc brakes.
Hydraulics and PTO
The hydraulic system is a closed-center, pressure and flow-compensated design. It provides a total flow capacity of 44 gpm (166.5 lpm), with a pump flow of 30 gpm (113.6 lpm) and a system pressure of 2900 psi (200.0 bar). The system supports 4 or 5 valves. The rear independent PTO operates at 1000 RPM, standard for heavy-duty implement requirements.
Dimensions and Weight
The tractor features a wheelbase of 137.8 inches (350 cm) and a total length of 274 inches (695 cm). The shipping weight is 30,970 lbs (14,047 kg), while the operating weight can reach 35,375 lbs (16,046 kg) when equipped with 620/70R46 dual tires. The rear hitch is categorized as Type III and IV/IVN, with a rear lift capacity of 13,871 lbs (6,291 kg).
Conclusion
The John Deere 9120 is a robust, high-capacity tractor engineered for demanding traction tasks. Its combination of high-flow hydraulics, varied power shift transmission configurations, and articulated steering makes it well-suited for heavy tillage and large-scale field work typical of the 2002-2007 production era.
Production Information of John Deere, 9120
- Four-wheel Drive (4WD) tractor
- Built in Waterloo, Iowa, USA
| Manufacturer | John Deere |
|---|
Dimension and Tires Information of John Deere, 9120
| Clearance (front axle) | 26.8 inches [68 cm] |
|---|---|
| Wheelbase | 137.8 inches [350 cm] |
| Shipping weight | 30,970 lbs [14047 kg] |
| Width | 115.5 inches [293 cm] |
| Length | 274 inches [695 cm] |
| Clearance (drawbar) | 15 inches [38 cm] |
| Operating weight | 35,375 lbs (620/70R46 duals) [16046 kg] |
| Operating weight(optional) | 289 inches (with hitch) [734 cm] |
| Ag front | 20.8R42 |
|---|---|
| Ag rear | 20.8R42 |
Engine Specifications of John Deere, 9120
- Liquid-cooled
- 6-cylinder
| Starter volts | 12 |
|---|---|
| Displacement | 496 ci [8.1 L] |
| Oil capacity | 28 qts [26.5 L] |
| Air cleaner | Dry |
| Bore/Stroke | 4.56x5.06 inches [116 x 129 mm] |
| Coolant capacity | 55 qts [52.1 L] |
| Rated RPM | 2100 |
| Compression | 16.0:1 |
| Power | 280 hp [208.8 kW] |
Transmission Information of John Deere, 9120
Transmission variants 1
- Four ranges (A-D) and three gears (1-3) with high-low power shift. Synchronized shifting between ranges A-B, B-C, and C-D. Gear shifts are synchronized between 1-R, 1-2, and 2-3. Reverse gear does not operate in D range.
| Transmission | John Deere PowerSync |
|---|---|
| Transmission(optional) | 140 qts (with PTO) [132.5 L] |
| Oil capacity | 136 qts [128.7 L] |
| Type | Partial power shift |
| Gears | 24 forward and 6 reverse |
Transmission variants 2
| Transmission | John Deere Powershift |
|---|---|
| Type | Full power shift |
| Gears | 18 forward and 6 reverse |
- 24-speed partial power shift
- 18-speed full power shift
Mechanical Specs of John Deere, 9120
- Four-wheel drive
- CommandView cab standard with air-conditioning.
- Hydraulic wet disc brakes
| Steering | Hydrostatic articulated |
|---|
Power Information of John Deere, 9120
| Rear PTO | Independent |
|---|---|
| Rear PTO Type | 1000 |
Hydraulics Specifications of John Deere, 9120
| Total flow | 44 gpm [166.5 lpm] |
|---|---|
| Type | Closed center pressure/flow compensated |
| Valves | 4 or 5 |
| Pressure | 2900 psi [200.0 bar] |
| Capacity | 27 gal [102.2 L] |
| Capacity(optional) | 48 gpm (Powershift) [181.7 lpm] |
| Pump flow | 30 gpm [113.6 lpm] |
| Pump flow(optional) | 28 gal (with 3pt) [106.0 L] |
Three-Point Hitch of John Deere, 9120
| Rear Type | III |
|---|---|
| Rear Type(optional) | 14,445 lbs (optional) [6552 kg] |
| Rear Type(optional) | IV/IVN |
| Rear lift | 13,871 lbs [6291 kg] |
Electrical System of John Deere, 9120
| Ground | Negative |
|---|---|
| Battery CCA | 925 |
| Batteries | 2 |
| Charging system | Alternator |
| Battery volts | 12 |
| Charging amps | 140 |
Where it sits
With 280 HP, the John Deere 9120 sits between 9100 (260 HP) and 9220 (325 HP) in John Deere's range. Its power puts it in the 93th percentile of 2000s models in our database (2822 machines).
Frequently asked questions
How much horsepower does the John Deere 9120 have?
The John Deere 9120 delivers 280 HP.
What years was the John Deere 9120 produced?
The John Deere 9120 was produced in 2002-2007.
What engine does the John Deere 9120 have?
The John Deere 9120 is powered by a 6-cylinder engine.
What transmission does the John Deere 9120 use?
The John Deere 9120 uses a John Deere PowerSync transmission.
How much does the John Deere 9120 weigh?
The John Deere 9120 weighs 35,375 lbs (620/70R46 duals) [16046 kg].
Is the John Deere 9120 4WD?
The John Deere 9120 is available in 4WD.